Is it 4x4? if it is then you have to consider the front axle too. those are somewhat expensive and hard to find in 4.10 for a half ton since it would be better to change the whole axle. they are a pain to change too.

I make an annual trip to the u.p. about 500 miles one way.. other than that mainly 150 miles or so for mud bogs.. lags bad on the hills and have to stay in 3rd gear.. no overdrive. Will not hold speed in overdrive..